Albert herrmann



' IUNI-TED' STATESM PATENT OF ICE. It

ALBERT HERRMANN, or noonsr-on-rnn-unm,cERMAnr, nssicnon'ro THE FARBWERKE, VORMALS MEISTER, LUCIUS & BRUNING, OF SAME PLACE.

SPECIFIGATION forming part of Letters Eatent No. 437,989, dated October '7, 1890.

Application filed May 20, 1889. Sorta-1N0. 311,471, (Specimens) To all whom it may concern.-

Be it known that I, ALBERT HERRMANN, doctor of philosophy, a citizen of the Empire of Germany, residing at Hiichst=on=the Main, in the Empire of Germany, have invented certain new and useful Improvements in Green= Blue Coloring-Matter; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable :0 others skilled in the art to which it appertains to make and. use thesame.

My present invention relates to the production of an improved coloring-matter of an intense green-blue shade, which is the sulphonic acid of methylated and ethylated meta-amidotetralkyldiamidotriphenyl carbinol. The methylated and ethylated leuco bases corresponding to this sulphonated color are obtained by treatment of meta-amidotetralkyldiamidotriphenyl methane with methyl or ethyl halogens. (E. cfc O. Fischer, Bem'chte der cleutschen chemischen Gesellschaft XII, 802, and XIII, 673.) By employing a larger or smaller quantity of alkyl halogensuch as 2 5 methyl-chloride bromide iodide and ethylchloride bromide iodide-there may be obtained monomethylated (monoethylated) H /O,H NeH (Meta) 1 e i lz'z or dimethylated (diethylat-ed) 5 /C H NOH (Meta) l meta i amidotetralkyldiamidotriphenyl me thanes,

The leuco base by treatment with sulphuric acid or fuming sulphuric acid is converted into sulphonic acid, which by oxidation with peroxides such as manganese peroxide, lead peroxide, barium peroxidefurnishes. solid green-blue acid coloringmatter. The same acid col0ring=matter can be obtained also by the action of sulphuric acid upon methylated or ethylated meta amidotetralkyldiami- 5o dotriphenyl carbinol. The coloring-matter is produced in the following manner, viz: Ten

parts, by Weight, of the calcium salt of the sulphonic acid, prepared from dimethyl metaamidotetralkyldiamidotriphenyl methane,are

dissolved in about three hundred parts, by 5 5 weight, of water. There is then added the calculated quantities of diluted sulphuric acid and peroxide of lead. It is then filtered off from the precipitated sulphate of lead, and the blue solution of coloring-matter is evaporated to dryness. In this manner I produce it: The sulphonic acid (and the salts thereof) ofmonomethylmeta-amidotetramethyldiamidotriphenyl methane, monoethylmeta-amidotetramethyldiamidotriphenyl methane, dimethyl meta amidotetramethyl diamidotriphenyl methane, diethylmeta amidotetra methyldiamidotriphenyl methane, monome thylmeta amidotetraethyldiamidotriphenyl methane, monoethylmeta-amidotetraethyldiamidotriphenyl methane, dimethylmeta-amb dotetraethyldiamidotriphenyl methane, di ethylmeta amidotetraethyldiamidotriphen yl methane, monomethylmeta-amidodimethyldiethyldiamidotriphenyl methane, symmetric 7 5 o runon mem H on o nnt on om, CGHLLNH 0H3 monomethylmeta amidodimethyldiethyldi- 8 amidotriphenyl methane non-symmetric,

O H NGH (Meta) H OH-o mNmrn),

O6H4N 2 92 diethyldiamidotriphenyl methane symmetric, diethylmeta-amidodimethyldiethyldiami- I a c0pper-red powdenwith metallic luster, easily soluble in water. The physical and chem- 2o ical comportment is the same as that of the sulphonic acid of the meta-amid0tetra1kyldi amidotriphenyl carbinol.

Having thus described my invention, What I claim as new, and desire to secure by Letters 2 5 Patent, is-- I A new green-blue coloring-matter in the form of a copper-red powder with metallic luster, the sulphonic acid of methylated and ethylatedmeta-amidotetralkyldiamidotripheo nyl carbinol, easily soluble in water, as set forth. p

In testimony whereof I affix my signature in presence of two Witnesses.

ALBERT HERRMANN.

Witnesses; 7

JOSEPH REVERDY, HEINRICH HAHN. 

